Microwave ovens use microwave radiation to heat food. Theenergy of the microwaves is absorbed by water molecules infood and then transferred to other components of the food.(a) Suppose that the microwave radiation has a wavelengthof 11.2 cm. How many photons are required to heat 200 mL ofcoffee from 23 to 60 °C? (b) Suppose the microwave’s power is900 W 11 watt = 1 joule@second2. How long would you haveto heat the coffee in part (a)?

Q: Recall that electromagnetic waves travel at the speed of light of 3.00 x 10 m/s; and that Planck's…

A: Frequency associated with blue light (ν) = 7.5 × 1014 Hz       (given) Speed of light (c) = 3 X 108…

Q: Calculate the wavelength (in nanometers) of light with energy 1.89 × 10–20 J per photon. (b) For…

A: For part (a) we have to find the wavelength in nanometers of light with energy 1.89 × 10–20 J per…

Q: Consider the possible transitions between energy levels in a He+ ion. For which of these transitions…

A: The wavelength of the transition emitted by a photon from an excited state to a lower energy state…

Q: Note: Reference the Fundamental constants table for additional information. Part 1 of 2 How many…

A: Heat required to melt 1 g of ice = 334 Jh = 6.62610-34 Jsc = 3108 ms-1molar mass of water = 18.02…

Q: The scattering of sunlight by the mixture of gas molecules in air results in the blue color of the…

A: Concept based on the calculation of energy of a single photon of blue light with a given frequency.…

Q: The net change during photosynthesis involves CO2 and H2O forming glucose (C6H12O6) and O2.…

A: A balanced thermochemical equation for formation of 1.00 mol of glucose has to be given.

Q: Consider the following types of electromagnetic radiation: (1) microwave, (2) ultraviolet, (3) radio…

A: Energy of radiation= h×frequency  frequency= c÷wavelength

Q: Suppose that you have a solution containing a substance whose molecules have two quantum states…

A: The population at high energy state is given by:        N = N0 e-ΔE/KT The percentage of molecules…

Q: How fast must a 148 g baseball travel in order to have a de Broglie wavelength that is equal to that…

A: de-Broglie wavelength(L) = 100 pm 1 pm = 10-12 m So, L = 100×10-12 = 10-10 m Mass(m) = 148 g = 0.148…

Q: A 545 g portion of soup is heated in a microwave oven from 25.0 °C to 90.0 °C, using radiation with…

A: Energy absorbed by the soup, E=mC∆T Energy of a photon, E'=hcλ

Q: Sound waves, like light waves, can interfere with each other, giving maximum and minimum levels of…

A: a) Given information: Intensity of sound gets minimum from maximum when speaker one moved 0.16 m.…

Q: (a) Calculate the energy of a single photon of light with a frequency of 6.38×108 s-¹. Energy = J…

A: Given,  The frequency of a light is 6.38 × 108 s-1  The energy of a single photon is:

Q: A local AM radio station broadcasts at a frequency of 826 KHz. Calculate the energy of the frequency…

A: Answer:- This question is answered by using the simple concept of calculation of energy of photon…

Q: Calculate wavelength and frequency of waves.     (a) A local radio station broadcasts at a…

A: The objective of the question is to calculate the wavelength and frequency of waves. In part (a), we…

Q: The fastest golf drive ever recorded is 97.05 m/s (217.1 mph) and was achieved by Ryan Winther at…

A: the distance between two  consecutive  crest or two consecutive trough is known as Wavelength.

Q: What is the wavelength λ of the photon that has been released in Part B? ΔE =  −2.04×10−18 J…

A: The relation between energy and wavelength of a radiation is given by Planck-Einstein’s relation,…

Q: If an atom of neon-20 were moving at its root mean square velocity at 255°C, what would the de…

A: Root mean square velocity=3RTMGwhere ,         R=Universal gas constant         T=Temperature in…

Q: The total energy of a mole of photons of a particular type of IR light is 10.7025 kJ. What is the…

A: Energy of one photon is inversely proportional to the wavelength of the radiation. Higher the energy…

Q: A 493 g portion of soup is heated in a microwave oven from 25.0°C to 90.0°C, using radiation with a…

A:

Q: A baseball pitcher's fastballs have been clocked at about 94 mph (1 mile = 1609 m).   (a) Calculate…

A: Given data :

Q: The blue solution formed when an alka li metal dissolves in liquid ammonia consists of the metal…

A:

Q: The average speed of a diatomic oxygen molecule at 25 degrees Celsius is 482.1 m•s^-1. What is the…

A: Given : Speed of oxygen molecule = 482.1 m/s Molar mass of O2 = 32 g/mol

Q: A photon of blue light has a frequency of 6.20 x 10¹4 Hz. Calculate the wavelength of this photon (c…

A: Frequency is inversely proportional to wavelength

Q: Consider a wave with a wavelength  = 2.5 cm that traveling at a speed of 15 m/s. (a) How long does…

A: Answer a) To travel a distance of one wavelength it takes 0.00167 seconds b) The no.of wavelengths…

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: When we energy of Photon to metal then electron which have minimum energy tha is equal to threshold…

Q: A container with 0.2450.245 L of water is placed in a microwave and radiated with electromagnetic…

A: Since the energy required for increasing the temperature of water by 69.9 °C is given by  Q = mCpΔT…

Q: a ease and wavelength for all transitions indicated using the following equation Also correction the…

A: Given values as,

Q: Explain why the emission of light energy of lower energy in fluorescence is not a viola- tion of the…

A: When the molecule absorbs photon of frequency, vex in the singlet ground state (So), it gets excited…

Q: Enter your answer in the provided box. What is the wavelength (in meters) of an electromagnetic wave…

A:

Q: (a) A hydrogen atom goes from the n = 5 state to the n = 2 state. Is this an absorption or an…

A: Transition from one state to another state is possible by absorption or emission of energy.

Q: A local FM radio station broadcasts at an energy of 5.98×10-29 kJ/photon. Calculate the frequency…

A: Given data,  Energy of photon = 5.98 × 10-29 KJ  1 MHz = 106 sec-1

Q: A 249 g portion of soup is heated in a microwave oven from 25.0°C to 90.0°C, using radiation with a…

A: Given: mass of soup = 249 g Temperature change = 25.0°C to 90.0°C wavelength = 1.55 × 10⁻² m…

Q: A 227−lb fullback runs the 40−yd dash at a speed of 16.15  0.10 mi/h. Enter your answers in…

A: The de-Broglie wavelength is calculated as follows,                                    λ = hm v…

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.